IBM HTTP Server help: SSL Directives

Afpa Directives

AfpaAdvancedTuning

The AfpaAdvancedTuning directive has advanced tuning parameters that requiere an advanced understanding of web server performance issues. Using these switches incorrectly could lead to system instability (i.e. blue screens) and/or poor performance. The default settings are considered the optimal settings for the most demanding scenarios. The default settings are aggressive.

Brief description switches and their defaults:

Long description of switches:

Example Optimized Settings for typical 1, 2, and 4 way machines

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AfpaBindLogger

AfpaBindLogger allows you to bind the Fast Response Cache logging thread in the kernel to a specific processor. The format of the command is AfpaBindLogger [-1, 0, 1, ..., n], -1 will leave the logging thread unbound and a number from 0 to total number of processors on the system will bind the logging thread to that processor.

NOTE: This command will only bind the kernel logging thread to a processor and not the Apache process.

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AfpaCache

The AfpaCache directive turn the Fast Response Cache Accelerator on or off for a particular scope (such as a directory). This directive applies to all descendants in a scope unless otherwise modified by another directive.

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AfpaEnable

The AfpaEnable directive is use to enable the Fast Response Cache Accelerator (Cache Accelerator). If the directive is present the Cache Accelerator will listen on the TCP port specified by the Port directive or the default port 80. The Cache Accelerator will listen on to the port on all TCP/IP adapters that are active on the server. If the port is specified to be bound to a particular TCP/IP adapter the Cache Accelerator will be disabled.

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AfpaLogFile

Defaults to Cache Accelerator logging disabled if AfpaLogFile directive is not present.

The current date is used as the filetype for the log file. The log file is automatically rolled over at midnight each day.

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AfpaLogging

The AfpaLogging directive will turn the Fast Response Cache Accelerator logging on or off.

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AfpaMaxCache

The AfapMaxCache directive specifies the maximum file size which can be inserted into the Fast Response Cache Accelerator cache.

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AfpaMinCache

The AfpaMinCache directive specifies the minimum file size which can be inserted into the Fast Response Cache Accelerator cache.

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AfpaRevalidationTimeout

AfpaRevalidationTimeout sets the time interval for a cached object to be revalidated. Once an object is cached in the kernel after the time interval has expired, the kernel will force the next request of the object to set up Apache server to be revalidated. The time interval is expressed in seconds.

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AfpaSendServerHeader

The AfpaSendServerHeader directive specifies whether or not the Fast Response Cache Accelerator will send the HTTP Server header in the response.

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